Thanks Mark. I've usually try to use 14 AWG wire (or larger) for power feed and a nice big capacitor right after the power switch. In the BITXs I use an 8 volt pre-regulator to feed the Raduino. Probably why I have few problems. I'm hoping to hear from the others to see if their issues were related. Having that signal present on the power throughout the transceiver could create some real mysteries. 73, Don